X m mold



Patented Feb. 19, 1924.

tlNlTED JUH'N I). PLESSMAN, Ola OAKLAND, CJhLlEEGHhl'llh.

MOLD.

Application filed August it, 1922. Serial No. 5531,6522.

To all whom it may concern Be it known that I, Jenn J. Pnnssman, a citizen of the United States, residing at (lain land, in the county of Alameda and State of California, have invented certain new and useful Improvements in h lolds, of which the following; is a specification.

My invention is an improved mold of a molding machine, particularly useful for molding window sash weights and other chilled castings, and it is an improvement on the mold of my molding machine disclosed in my application filed November 8, 1921, Serial No. 513,634l.

My improved mold may be readily mounted on the machine or removed therefrom and includes a replaceable mouth piece which may be removed when burnt out and another inouth piece substituted therefor, and a pair of replaceable casting pins for casting holes in the castings, which pins may be readily removed when burnt by the casting and others substituted, thus greatly increasing the length of the life of the mold.

Referring to the annexed drawing; in which my invention is illustrated and which forms a part of this specification:

Figure 1 is a fragmentary front elevation of a molding machine including one of my molds.

Figure 2 is an inside view of one section of my mold.

Figure is a transverse vertical section of my mold taken on line 3-3 of Figure In the drawing '1. indicates one of a pair of standards mounted on a base 2. A pair of angle irons 3 are mounted at their enc s on the standards 1. 011 said standards are sleeves 4 in which are secured the ends of a shaft 5 extending between the angle irons The above described structure of a molding 'machine is disclosed in my aforesaid application and forms no part of this invention, and I make no claim to said structure in this application.

My'mold includes a pair of complementary mold sections 10 and 11, which are provided respectively with coinciding slots 12-12 extending upwardly from the lower edges thereof, flanges 13-13 extending respectively from the ends of said sections, a replaceable mouth piece 14 comprising a pair of complementary members 15 and 16 secured respectively to the top of mold sections 10 and 11 by screws 17 and pins 1818 extending transversely through coinciding bores 19-19 in the lower part of said mold sections with the inner ends of the pins engaging each other in the mold at the meeting surfaces of said sections. Said pins are held in position by set screws 2O 2O seated in the lower part of said sections. The mouth piece members it and 16 are formed with months 21, half of each mouth being in one member and half in the other member, and with ports 22, half of each port being" in one member and half in the other member, which ports lead into the cavities 23 of the mold.

1i number of my molds are mounted onthe shaft 5 by lowering the molds from above the shaft 5 so that the shaft passes upwardly through the slots 12--12 until the upper ends of said slots res; upon the shaft as shown in Figure 2, thus makin possible to slip the mold on or off the sha L. The mold sections are detachably secured together by securing the flanges l3-13 to the angle irons 3-Z l by bolts 24 and 25.

The objects, such as sash. weights, cast in the mold are cast with holes in their lower ends by the pins 18. Said pins when burnt by the hot metal aitcr considerable use may be removed and replaced by other pins.

Having described my invention, 1 claim:

1. In a molding machine, a pair of mold sections formed respectively with coinciding slots extending upwardly from their lower edges, and a shaft extending through adjacent slots at the upper ends thereof and connected to one of said sections.

2. A mold comprising a pair of mold sec tions, a pin extending from the exterior of a section through that section and into the mold cavity and a set screw operable from without the mold for holding said pin in position in its section.

3. In combination a mold comprising a pair of mold sections, and a mouth piece comprising a pair of complementary members dctachably and rigidly secured respectively to said mold sections, said mouthpiece having; a mouth, half in one member and half in the other member, and ports half in one member and half in the other member, said ports leading to the cavity of the mold.

4. A mold of a molding machine comprising a pair of mold sections formed respectively with coinciding slots extending up wardly from their lower edges, through both of which slots the shaft of the molding machine is slipped.

piss

5. A mold comprising a pair of mold sections, a mold cavity in each of said sections, two core. pins one in each section, each core pin extending through the wall of its respective section and into its respective mold cavity, each of said core pins having an end projecting outside of said respective mold sections. s

6. A mold comprising a pair of mold sec tions, a mold cavity in said mold sections, two core pins one in each section, each core pin extending through the Wall of its respective section and both of said pins extending into said mold cavity, each of said core pins having an end projecting outside of said respective mold sections.

7.- A mold comprising a pair of mold sections, a mold cawdty in said mold sections, two core pins one in each section, each core pin extending through the Wall of its respective section and both of said pins extending into said mold cavity, means for holding each of said core pins in a predetermined position.

8. In combination a mold comprising a pair of mold sections, and a mouth piece comprising a pair of complementary members detachably secured respectively to said mold sections.

9. In a molding machine, a pair of mold sections formed respectively With coinciding slots extending upwardly from their lower edges, and a horizontal shaft extendin through said slots and connected to one 0? said sections.

In testimony whereof I afiix my signature JOHN J. PLESSMAN. 

